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Unit 3: Maintaining Dynamic Equilibrium II

Two faces each with one eye visible

Why do we need two eyes to see?

Hands-on Activities

Ever wondered why we have two eyes (and not one, three or more)? Find how your two eyes work together in this hands-on activity.

Why is everything so small down there?

Why is everything so small down there?

Hands-on Activities

Explore how we see things far and near and from different angles. It's all about perspective!

Missing alt

Zoetrope

Interactives

Zoetropes are an early form of animation technology. Learn about this Ingenium artifact and make your own version of this artifact using 3D printing!

Sound waves

What is Sound and How do we Hear it?

Backgrounders

Learn how sound travels in waves and how it is measured in this backgrounder.

icon of embryo in hands

What if You Could Choose Your Baby?

STEM Explained

Many people have had children using assisted reproductive technologies. But some of these medical biotech techniques can raise some ethical issues.

Like trees, brains grow and develop

Understanding the Teen Brain

STEM Explained

Teen brain development prepares teens for adulthood, but also affects their emotions.

International Space Station in the rays of the Sun

Temperature on Earth and on the ISS

Backgrounders

Temperature is an important part of life on Earth and life in space. This backgrounder explains what temperature is, how it affects people and how it is controlled on the International Space Station.

Students studying outdoors on grass

The Benefits of Going Outside

STEM Explained

Spending time outside has important physical and psychological benefits. It can even help you learn better!

man sick with the flu

The Surprising Reason You Feel Awful When You're Sick

STEM Explained

Viruses can make you feel awful! This article explains how feeling bad might be your immune system’s way of helping you heal.

 Sound waves and sound-producing devices. Image © jop_pop, istockphoto.com

Sound vs. Noise

STEM Explained

What is the difference between sound and noise? How do they affect your hearing? And is noise always a bad thing?

 Inside the Destiny Laboratory Module on board the International Space Station

Noise on Earth and on the International Space Station

Backgrounders

This backgrounder explains what noise is, how it is measured, and how it affects our hearing, wellness and more.

Is a green apple always green?

Is a green apple always green?

Hands-on Activities

What does light have to do with colour? Observe some colourful fruit under different conditions to learn why we see the colours we see!

Is feeling always believing?

Is feeling always believing?

Hands-on Activities

Get your hands cold for science and explore the topic of sensory adaptation.

Lighting inside the Destiny Laboratory Module

Light on Earth and on the International Space Station

Backgrounders

This backgrounder explains what light is, how it is measured, and how it affects people on Earth and astronauts on board the International Space Station.

How fast can you react?

How fast can you react?

Hands-on Activities

What is a reflex? Test your reaction time and find out why reflexes are important in this challenge activity.